Marlborough District Council Roading Assets - Activity Management Plan 2015 - 2018 SECTION 1 EXECUTIVE SUMMARY 1.6.8.4 Demand / Growth Generally new vehicle crossings are installed with new subdivision or development. Council has a policy that at the time a building consent is applied for, a property owner must install a vehicle crossing complying to Council standards. Council then takes ownership of the crossings and maintains the asset. Growth of the crossing assets are expected to be in line with subdivision growth and can be expected to be in the order of 200 per annum or 1.5% growth. An allowance has been made in the financial summaries for an increase in the crossing assets from new subdivisions. 1.6.8.5 Life Cycle Management Little analysis has been undertaken on the projected life cycle of a vehicle crossing. A rural sealed crossing is expected to last 30 years as long as it is re-sealed 1-2 times during its life (as part of the maintenance reseals budget) and an urban concrete crossing would last 50-80 years depending on the use and age of the crossing (older crossings, pre 1980, were generally thinner and of poorer construction). Some urban crossings will be reconstructed during planned road reconstruction works or the footpath resurfacing programme and are renewed from other budgets. Others are renewed through sub-divisional consents at the cost of the property owner. Rural vehicle crossings are resurfaced during reseals and are usually reconstructed with road renewal work and are funded from those budgets. 1.6.8.6 Cost / Financial / FWP Current budget allocations are $41,000 for maintenance and $61,000 for renewals. Maintenance If maintenance is undertaken on 50% of the vehicle crossings that are not renewed (e.g. 25% of the total) and that maintenance extends the life by 20 years, the current maintenance budget of $41,000 is adequate and only needs to be increased for escalation and any growth of the asset. Maintenance budgets and the level of service for vehicle crossings have remained reasonably constant over the last 5 years. Currently maintenance is reactive, generally from customer complaints, with little planned maintenance prioritised and undertaken. Reactive maintenance is undertaken within 24 hours of notification of the defect. Section 3 of this AMP discusses customer Levels of Service. The detailed list of technical performance measures are listed in the Marlborough Roads Safety Management System Manual. Vehicle Crossings are constructed and maintained in accordance with the relevant Council’s Code of Practice for Subdivision and Land Development. Renewal The estimate is that half of the urban vehicle crossings and all of the rural crossings are renewed by other budgets and sources. Assuming then 6,000 vehicle crossings (half of total urban 12,000) at an average life of 80 years (concrete), Council should be replacing around 75 per year. At $1,000 each this would require an allocation of $75,000 per annum. The currently level of funding for vehicle crossing renewals is slightly below $75,000 but should be increased to that level during the period of this plan. Currently all vehicle crossings are renewed/constructed in concrete with an expected life of 80 years. As an alternative standard vehicle crossings may be renewed/constructed from asphaltic concrete or seal (expected life 40 years and 30 years respectively) with an initial construction cost saving of approximately $600 per vehicle crossing. However these types of crossings are not as robust as concrete and it is likely that the savings in construction would be outweighed by the increase in maintenance costs and early renewal of the asset. Capital 30 September 2014 Page 99 of Section 1